$ ./check_substr.sh "This is a test string" "is a test" "This is a test string" contains "is a test" $ ./check_substr.sh "This is a test string" "isa test" "This is a test string" does not contain "isa test" $ ./check_substr.sh "This is a test string" "new string"...
StringUtils.contains("abc", "a") = true StringUtils.contains("abc", "z") = false Parameters: str - the String to check, may be null searchStr - the String to find, may be null Returns: true if the String contains the search String, false if not or null string input In Bash 是否...
/bin/bash string="Hello, World" if [[ $string == *Hello* ]]; then echo "The string contains 'Hello'" fi ``` 在上面的示例中,首先定义了一个字符串变量string,然后使用if语句判断该字符串是否包含“Hello”这个子字符串。如果包含,则输出提示信息。需要注意的是,在if语句中双括号“[[”和“]]”...
echo "String contains lowercase letters" else echo "String does not contain lowercase letters" fi ``` 这段代码将输出 "String contains lowercase letters",因为变量 str 中的字符串包含小写字母。 总的来说,Linux 中的 if 语句和字符串匹配是编写 Bash 脚本时基本的工具之一。通过合理的使用条件判断和字符...
The shells have several tools that can help us to perform string evaluations. For example, the Bash shell hasthe[ ]builtin commands and the[[ ]]keywords. These tools can perform string evaluations that we can use to search for a string inside another. ...
-n is one of the supported bash string comparison operators used for checking null strings in a bash script. When -n operator is used, it returns true for every case, but that’s if the string contains characters. On the other hand, if the string is empty, it won’t return true. ...
然而,这串,我知道如何通过使用GREP -lir contains前缀/path在< 浏览2提问于2012-04-04得票数 0 回答已采纳 5回答 查找linux中包含关键字的文件的所有目录。 、、、 在我的目录层次结构中,我有许多名为STATUS.txt的文本文件。这些文本文件每个包含一个关键字,如完整、等待、未来或打开。我希望执行以下形式的...
二、测试工具 2.1 网络限速工具tc tc 是 Linux 中用于配置网络参数的命令行工具，通过它可以模拟不同...
[root@server-01 ~]# cut -f 1 /etc/passwdroot:x:0:0:root:/root:/bin/bashbin:x:1:1:bin:/bin:/sbin/nologindaemon:x:2:2:daemon:/sbin:/sbin/nologinadm:x:3:4:adm:/var/adm:/sbin/nologinlp:x:4:7:lp:/var/spool/lpd:/sbin/nologinsync:x:5:0:sync:/sbin:/bin/syncshutdown:...
(根据需求配置)" groupadd application useradd -m -s /bin/bash -c "application primary user" -g application app echo "root:${APPPASS}" | chpasswd log::info "[-] 强制用户在下次登录时更改密码 " chage -d 0 -m 0 -M 90 -W 15 root && passwd --expire root chage -d 0 -m 0 -M ...